Kinetic study of low-temperature CO2 plasmas under non-equilibrium conditions. I. Relaxation of vibrational energy

T.J. Silva, M. Grofulović, B.L.M. Klarenaar, A.S. Morillo-Candas, O. Guaitella, R. Engeln, C.D. Pintassilgo, V. Guerra

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

24 Citaties (Scopus)
1 Downloads (Pure)

Uittreksel

A kinetic model describing the time evolution of ∼70 individual CO2(X1Σ+) vibrational levels during the afterglow of a pulsed DC glow discharge is developed in order to contribute to the understanding of vibrational energy transfer in CO2 plasmas. The results of the simulations are compared against in situ Fourier transform infrared spectroscopy data obtained in a pulsed DC glow discharge and its afterglow at pressures of a few Torr and discharge currents of around 50 mA. The very good agreement between the model predictions and the experimental results validates the kinetic scheme considered here and the corresponding vibration-vibration and vibration-translation rate coefficients. In this sense, it establishes a reaction mechanism for the vibrational kinetics of these CO2 energy levels and offers a firm basis to understand the vibrational relaxation in CO2 plasmas. It is shown that first-order perturbation theories, namely, the Schwartz-Slawsky-Herzfeld and Sharma-Brau methods, provide a good description of CO2 vibrations under low excitation regimes.

Originele taal-2Engels
Artikelnummer015019
Aantal pagina's15
TijdschriftPlasma Sources Science and Technology
Volume27
Nummer van het tijdschrift1
DOI's
StatusGepubliceerd - 1 jan 2018

Vingerafdruk

nonequilibrium conditions
cold plasmas
vibration
kinetics
afterglows
glow discharges
direct current
energy
molecular relaxation
perturbation theory
energy levels
energy transfer
infrared spectroscopy
coefficients
predictions
excitation
simulation

Citeer dit

Silva, T.J. ; Grofulović, M. ; Klarenaar, B.L.M. ; Morillo-Candas, A.S. ; Guaitella, O. ; Engeln, R. ; Pintassilgo, C.D. ; Guerra, V. / Kinetic study of low-temperature CO2 plasmas under non-equilibrium conditions. I. Relaxation of vibrational energy. In: Plasma Sources Science and Technology. 2018 ; Vol. 27, Nr. 1.
@article{07fd49cbc7d64ec6889cfc64408a625f,
title = "Kinetic study of low-temperature CO2 plasmas under non-equilibrium conditions. I. Relaxation of vibrational energy",
abstract = "A kinetic model describing the time evolution of ∼70 individual CO2(X1Σ+) vibrational levels during the afterglow of a pulsed DC glow discharge is developed in order to contribute to the understanding of vibrational energy transfer in CO2 plasmas. The results of the simulations are compared against in situ Fourier transform infrared spectroscopy data obtained in a pulsed DC glow discharge and its afterglow at pressures of a few Torr and discharge currents of around 50 mA. The very good agreement between the model predictions and the experimental results validates the kinetic scheme considered here and the corresponding vibration-vibration and vibration-translation rate coefficients. In this sense, it establishes a reaction mechanism for the vibrational kinetics of these CO2 energy levels and offers a firm basis to understand the vibrational relaxation in CO2 plasmas. It is shown that first-order perturbation theories, namely, the Schwartz-Slawsky-Herzfeld and Sharma-Brau methods, provide a good description of CO2 vibrations under low excitation regimes.",
keywords = "CO plasmas, dissociation, low-temperature plasma, modeling, vibrational excitation, vibrational kinetics",
author = "T.J. Silva and M. Grofulović and B.L.M. Klarenaar and A.S. Morillo-Candas and O. Guaitella and R. Engeln and C.D. Pintassilgo and V. Guerra",
year = "2018",
month = "1",
day = "1",
doi = "10.1088/1361-6595/aaa56a",
language = "English",
volume = "27",
journal = "Plasma Sources Science and Technology",
issn = "0963-0252",
publisher = "Institute of Physics",
number = "1",

}

Silva, TJ, Grofulović, M, Klarenaar, BLM, Morillo-Candas, AS, Guaitella, O, Engeln, R, Pintassilgo, CD & Guerra, V 2018, 'Kinetic study of low-temperature CO2 plasmas under non-equilibrium conditions. I. Relaxation of vibrational energy', Plasma Sources Science and Technology, vol. 27, nr. 1, 015019. https://doi.org/10.1088/1361-6595/aaa56a

Kinetic study of low-temperature CO2 plasmas under non-equilibrium conditions. I. Relaxation of vibrational energy. / Silva, T.J.; Grofulović, M.; Klarenaar, B.L.M.; Morillo-Candas, A.S.; Guaitella, O.; Engeln, R.; Pintassilgo, C.D.; Guerra, V.

In: Plasma Sources Science and Technology, Vol. 27, Nr. 1, 015019, 01.01.2018.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Kinetic study of low-temperature CO2 plasmas under non-equilibrium conditions. I. Relaxation of vibrational energy

AU - Silva, T.J.

AU - Grofulović, M.

AU - Klarenaar, B.L.M.

AU - Morillo-Candas, A.S.

AU - Guaitella, O.

AU - Engeln, R.

AU - Pintassilgo, C.D.

AU - Guerra, V.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A kinetic model describing the time evolution of ∼70 individual CO2(X1Σ+) vibrational levels during the afterglow of a pulsed DC glow discharge is developed in order to contribute to the understanding of vibrational energy transfer in CO2 plasmas. The results of the simulations are compared against in situ Fourier transform infrared spectroscopy data obtained in a pulsed DC glow discharge and its afterglow at pressures of a few Torr and discharge currents of around 50 mA. The very good agreement between the model predictions and the experimental results validates the kinetic scheme considered here and the corresponding vibration-vibration and vibration-translation rate coefficients. In this sense, it establishes a reaction mechanism for the vibrational kinetics of these CO2 energy levels and offers a firm basis to understand the vibrational relaxation in CO2 plasmas. It is shown that first-order perturbation theories, namely, the Schwartz-Slawsky-Herzfeld and Sharma-Brau methods, provide a good description of CO2 vibrations under low excitation regimes.

AB - A kinetic model describing the time evolution of ∼70 individual CO2(X1Σ+) vibrational levels during the afterglow of a pulsed DC glow discharge is developed in order to contribute to the understanding of vibrational energy transfer in CO2 plasmas. The results of the simulations are compared against in situ Fourier transform infrared spectroscopy data obtained in a pulsed DC glow discharge and its afterglow at pressures of a few Torr and discharge currents of around 50 mA. The very good agreement between the model predictions and the experimental results validates the kinetic scheme considered here and the corresponding vibration-vibration and vibration-translation rate coefficients. In this sense, it establishes a reaction mechanism for the vibrational kinetics of these CO2 energy levels and offers a firm basis to understand the vibrational relaxation in CO2 plasmas. It is shown that first-order perturbation theories, namely, the Schwartz-Slawsky-Herzfeld and Sharma-Brau methods, provide a good description of CO2 vibrations under low excitation regimes.

KW - CO plasmas

KW - dissociation

KW - low-temperature plasma

KW - modeling

KW - vibrational excitation

KW - vibrational kinetics

UR - http://www.scopus.com/inward/record.url?scp=85041377955&partnerID=8YFLogxK

U2 - 10.1088/1361-6595/aaa56a

DO - 10.1088/1361-6595/aaa56a

M3 - Article

AN - SCOPUS:85041377955

VL - 27

JO - Plasma Sources Science and Technology

JF - Plasma Sources Science and Technology

SN - 0963-0252

IS - 1

M1 - 015019

ER -